Countdown to NBN changes

Inner-city homes and businesses that can access the National Broadband Network but haven't signed up for it won't have access to home phone and broadband services after March 20.

A NBN Co representative said the company was in the process of notifying unconnected houses and businesses of the changes.

"As part of a national upgrade to Australia's fixed-line infrastructure, services over the NBN are scheduled to progressively replace most existing landline phone and internet services in parts of Mackay from March 20, 2015," the representative said.

"We are urging the remaining homes and businesses in the area that have not placed an order for services over the NBN to contact their preferred internet service provider or phone company as soon as possible."

To notify residents, a communication campaign is under way. It includes advertising, community information sessions and door-to-door service calls.

"NBN Co has begun making service calls within areas of Mackay to raise community awareness, help older Australians and inform households and businesses on the steps required to connect to the NBN," the representative said.

Houses, units and small businesses will be visited by NBN Co ambassadors from now until February 19 with important messages on services affected by the switch-off.

About 1700 premises are due to make the transition to the National Broadband Network next month.

South Mackay and East Mackay are due to make the transition on September 30.